公开(公告)号：US20240223084A1

公开(公告)日：2024-07-04

申请号：US18526107

申请日：2023-12-01

Applicant: NXP B.V.

Inventor： Christian Vincent Sorace ,  Vincent REGNAULD ,  Ludovic Oddoart ,  Nicolas Patrick Vantalon

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/0022 ,  H02M1/0045

Abstract: In accordance with a first aspect of the present disclosure, a power supply circuit is provided, comprising: a first output node and a second output node; an inductor detection unit configured to detect whether an inductor is present at the first output node and to output a corresponding detection signal; a mode control unit configured to control an operating mode of the power supply circuit in dependence on said detection signal; wherein the inductor detection unit is configured to detect whether said inductor is present by pulling down the first output node, deriving a reference voltage from the second output node, and comparing a voltage level of the first output node with said reference voltage. In accordance with a second aspect of the present disclosure, a corresponding method of operating a power supply circuit is conceived.

公开(公告)号：US20240048050A1

公开(公告)日：2024-02-08

申请号：US18349301

申请日：2023-07-10

Applicant: NXP B.V.

Inventor： Fabien Boitard ,  Ludovic Oddoart ,  Christian Vincent Sorace

IPC: H02M3/157 ,  H02M3/158 ,  H02M1/088

CPC classification number: H02M3/157 ,  H02M3/158 ,  H02M1/088

Abstract: A digitally controlled DC-DC converter has a power stage coupled to an input voltage and to a control signal to generate an output voltage in response to the control signal. A controller generates the control signal and has an adjustment block to compare the output voltage to a reference voltage to generate a comparison signal, a logic circuit coupled to the adjustment block to receive the comparison signal and to generate the control signal in response to the comparison signal using a control word, and a digital-to analog converter coupled to the adjustment block, the power stage input voltage and the logic circuit to receive the control word from the logic circuit and to generate a converter voltage representing the control word using another voltage, the converter voltage being applied to the adjustment block to adjust the comparison signal.

公开(公告)号：US11057010B2

公开(公告)日：2021-07-06

申请号：US16711562

申请日：2019-12-12

Applicant: NXP B.V.

Inventor： Ghiath Al-kadi ,  Erich Merlin ,  Ulrich Neffe ,  Ludovic Oddoart

IPC: H03F3/38 ,  H03F3/217 ,  H03F3/26 ,  H03F1/02 ,  H03F1/26 ,  H03F1/56 ,  H04B5/00

Abstract: Embodiments of a power amplifier and method of operating a power amplifier are disclosed. In one embodiment, a power amplifier includes a pulse wave modulation (PWM) controller, a first power control stage configured to drive a first output between VDD and VSS in response to a control signal from the PWM controller, a second power control stage configured to drive a second output between VDD and VSS in response to a control signal from the PWM controller, and a mid-voltage control circuit configured to hold the voltage of the first output at a mid-voltage that is between VDD and VSS during an interval between when the first output is driven between VDD and VSS and hold the voltage of the second output at the mid-voltage during an interval between when the first output is driven between VDD and VSS.